Grandpa Phil (voice)

Stinky Peterson (voice)

Ernie Potts (voice)

Grandma Gertie (voice)

Harvey (voice)

Mr. Hyunh (voice)

Suzie Kokoshka (voice)

Miriam Pataki (voice)

Curly Gammelthorpe (voice)

Principal Wartz (voice)

Oskar Kokoshka / Smitty (voice)

Big Bob Pataki / Douglas Cain (voice)

Mr. Green / EBN Announcer (voice)

Monkeyman (voice; uncredited)